Weather: Seoul — December

December is typically good for visiting Seoul, with average highs of 4°C and around 5 rainy days. Plan your activities accordingly—outdoor sightseeing is best on dry days, while rainy days are perfect for museums and indoor attractions.

Yes, nights in Seoul during December are cold, averaging -5°C. Pack warm layers, a coat, and consider thermal underwear for extended outdoor evenings. Restaurants and cafés have indoor seating, and many museums stay open late.

With highs of 4°C and lows of -5°C in December, we recommend: Warm winter coat, Thermal base layers, Scarf and gloves, Comfortable walking shoes. Layering is key as temperatures can vary between air-conditioned interiors and outdoors. Comfortable walking shoes are essential for cobblestone streets.

Seoul typically sees around 5 rainy days in December. Rain is usually in the form of brief showers rather than all-day downpours, so a compact umbrella is sufficient. Mornings tend to be drier, making them ideal for outdoor sightseeing.

In December, Seoul gets approximately 9.6 hours of daylight per day. This affects how much sightseeing you can fit in—longer days mean more time for outdoor activities, while shorter days are perfect for cozy museum visits and early dinners.

No, December is not peak season in Seoul. Expect better value on accommodation, shorter queues at attractions, and fewer tourists at popular spots. This is an excellent time to experience the city like a local and enjoy a more authentic atmosphere.